102
NFS2-640/E Programming Manual —
P/N 52742:L2 7/17/14
Intelligent Sensing Applications
Detector Sensitivity Settings
C.4.2 How to Test Detectors Set Below 0.50% Obscuration per Foot
Using alarm sensitivities below 0.50% obscuration per foot requires a 90-day test to ensure that the
detector environment is suitable for the higher sensitivity setting. To meet Notifier and
Underwriters Laboratory requirements, test each detector planned to operate below 0.50%/ft
obscuration as follows:
1. Set the detector as follows:
2. Operate detectors continuously for 90 days with all environmental factors (such as,
temperature, humidity, air flow, occupancy, and so on) similar to the intended application for
the detectors. Record all events for each tested detector with an electronic History buffer or a
printout.
3. At the end of the 90-day test: An authorized Notifier representative, or an end user trained by
an authorized Notifier representative must inspect the results of the test. If the test results show
no alarms or pre-alarms for the tested detectors, reprogram the fire alarm system to set the
Alarm sensitivity to the more sensitive Pre-Alarm level of the test.
FSC-851 IntelliQuad
Detector
***
AL:1=1%
AL:2=2%
AL:3=3%
AL:4=3% w/ 10 minute confirmation
†††
AL:5=4% w/ 10 minute confirmation
AL:6=Thermal 135
o
F
AL:7=Thermal 135
o
F
AL:8=Thermal 135
o
F
AL:9=Thermal 135
o
F
PA:1=1%
PA:2=1%
PA:3=2%
PA:4=3%
PA:5=3% w/ 10 minute confirmation
PA:6=4% w/ 10 minute confirmation
PA:7=4% w/ 10 minute confirmation
PA:8=4% w/ 10 minute confirmation
PA:9=4% w/ 10 minute confirmation
Photo/CO
AL:1=1%
AL:2=2%
AL:3=3%
AL:4=3% w/ 10 minute confirmation
AL:5=4% w/ 10 minute confirmation
AL:6=Thermal 135°F
PA:1=1%
PA:2=2%
PA:3=3%
PA:4=3% w/ 10 minute confirmation
PA:5=4% w/ 10 minute confirmation
PA:6=Thermal 135°
* Detectors are suitable for open area protection within the listed air velocity range. Typically, this range is 0 - 4,000 ft/min for photoelectric
detectors and 0 - 1,200 ft/min for ionization detectors. Be sure to confirm this range before installing the detector by referring to the
manufacturer’s installation instructions.
† Use only alarm sensitivity setting of AL=1, AL=2 or AL=3 for ION detectors installed in Canada.
‡ The use of alarm sensitivities below 0.50% obscuration per foot requires a 90 day test to ensure that the environment for the detectors is
suitable for the higher sensitivity setting. (Refer to “How to Test Detectors Set Below 0.50% Obscuration per Foot” on page 102.)
** 1% maximum on CLIP. Higher figures may display.
†† For Acclimate detectors installed in Canada: Use only the alarm settings of AL:1 or AL:2.
‡‡ Refer to the beam detector manual to determine the alarm settings: they are a function of the distance between the detector and
its reflector
.
*** In CLIP mode, any AL: settings over AL:5 will be set to AL:5 by the panel. Any PA: settings over PA:5 will be set to PA:5 by the
panel.
†††
Within the 10 minute fire signature confirmation delay period if there is a detection of another fire signature (Carbon
Monoxide, Infrared or Thermal) it overrides the 10 minute confirmation time.
Table C.2 Detector Sensitivity (in percent obscuration per foot) (2 of 2)
Detector Type
Alarm (FlashScan)
Alarm (CLIP)
Pre-Alarm
Step
Action
1
Initially set to the 0.50% obscuration per foot Alarm level.
2
Set the Pre-Alarm level to the desired final Alarm sensitivity.
3
Set the Pre-Alarm to Alert mode (non-latching).